The Gallery
Finding the name of the painting that inspired these ones and investigating its history might reveal what went wrong here.
Hints
Getting started
This is a set of 12 minipuzzles, each of which yields a short answer of 3–5 letters. (The answer checker does not verify these answers.)
Specific hints
Chess, suits, balls, semaphore, seven-segment, A-to-Y, metric, Roman, Pac-Man, T9, calendar, elements.
Extraction
They did what to that painting? For 75 years?!
